Rugged Units Measure Temperature, Humidity and Dew Point
The thermistor of DICKSON® Model TH8 Chart Recorders give you accurate temperature readings. The digital humidity sensor provides pinpoint humidity and dew point data. It’s all easy to read on the 8"-dia. chart, which offers 84% more readable area than 6"-dia. charts. Display shows temperature, humidity and dew point so you can get information at a glance. You choose the temperature range and recording times you need. Flip-up pen arm allows easy chart and pen changes. Each unit is powered by a 120V AC adaptor and 9V battery for back-up power. TH802 Chart Recorder No. 138594 and TH803 Chart Recorder No. 138595 add a large digital display that can be read from up to 25' away. No. 138595 also includes high and low audio/visual alarms plus a remote probe. Replacement Charts in both Farenheit and Metric Scales for various temperature ranges and Replacement Pens are sold separately.